Machine for cutting tiles.



K. GNAD.

MACHINE FOR CUTTING TILES.

APPLIOATION PILED NOV. 27. 1907.

1,067,421, Patented July 15,1913.

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K. GNAD; MACHINE FOR CUTTING TILES.

APPLIOATION FILED NOV. 27, 1907.

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K. GNAD.

MACHINE FOE CUTTING TILES.

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COLUMBIA PLANDURAPH K. GNAD.

MACHINE r011 CUTTING TILES.

APPLICATION FILED NOV. 27, 1907. 1,067,421, Patented July 15, 1913.

4 SHEETSBHEET 4.

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KARL GNAI), OF WAIBLINGEN, GERMANY.

MACHINE FOR CUTTING TILES.

Specification of Letters Patent.

Patented July 15, 1913.

Application filed November 27, 1907. Serial No. 404,024.

To all whom it may concern:

Be it known that I, KARL GNAD, engineer, a subject of the King of Wurttemberg and German Emperor, residing at Schiitzenstrasse 1, .Vaiblingen, in the Kingdom of lVurttemberg and Empire of Germany, have invented certain new and useful Improvements in Machines for Cutting Tiles, of which the following is a specification.

The present invention refers to a device for cutting off tiles by means of which the known roofing tiles with lugs can be cut off, so that the tiles are manufactured with the lug downward, the novel feature of the invention consisting in this lug on the under surface of the tile being cut at the front end of the tile considered from the direction of travel of the tiles. This represents a considerable advantage as the lug may be better observed in front so that it is not damaged while the tile is being removed. In the machines employed until now with the lug strip on the under surface of the stream of clay the lug was liable to be damaged as it was made at the back end of the tile and was thus not visible. The cutting olf device according to the present invention further is remarkable for its great capacity which is obtained by means of a peculiar lug cutting arrangement. This consists essentially in the lug cutting wire being returned automatically and positively into the initial position after a tile has been cutoff, so that it is impossible for the stream of clay to be cut inadvertently and no waste is produced. Further by a further arrangement of the device cutting the front end of the tile not only segment shaped tiles but also semicircular tiles of various widths can be made. This is obtained by besides the detachable wire for cutting segment shaped tiles another wire for cutting semicircular tiles be ing employed, which latter wire is adjustable together with its gear. The wire can be made adjustable either in front or behind its swiveling point so that it traverses circular paths according to the width Also the wire itself may be so far adjusted that it may be used for cutting off segment shaped tiles.

On the frame 1 is arranged the truck -8 traveling in known manner with wheels on rails 2 and carrying the loosely rotatable rollers 5 serving as path for the stream of clay.

The cutting off of the tiles is effected from a driving spindle 6 horizontally and r0 tatably arranged in bearings 8 on the frame. On said spindle 6 is fitted ahand lever 7- by means of which the cutting off of the tiles from the stream of clay and the cutting to size is effected in one operation.

For cutting the straight end of the tile, which according to the presentinvention lies in front considered from the direction of travel of the clay, serves a cutting wire 11-, which is arranged over a hoop 10, fitted on spindle 6-, if therefore the lever 7, the two extreme positions of which are controlled by pins 9, is turned over, the wire 11 will cut off the stream of clay in a straight line. i

For cutting the lug of the tile a toothed segment 19- is fitted on spindle 6, said segment engaging with a toothed wheel -20. is coupled by means of connecting rod 21 with a lever 22 swiveling on bolt 23, Fig. t, said lever having a swiveling pawl 24l at its free end, which is under action of spring 25. This pawl acts while moving downward as driver on a stop 33 provided on a vertically moving slide 30-. This slide is guided on rods -31- and is under action of spring 32 which tend to force it upward. By the downward motion of the slide 30 also the lug cutting wire -26 is brought down and drawn out of the stream of clay, for

The latter acts as crank disk and which purpose the hoop 27 of the cutting wire --26- is carried by a spindle -29 rotatably arranged in the guide piece 30. The wire -26 and its hoop 27 are according to the present invention geared in such a manner that the wire immediately after emerging from the clay will leave the lug free at the length required, then again enter the clay and be rcturned by the stream to its original position. This gearing is effected by means of a switch, which consists of the two lateral guide rails 4l0-, Fig. 5, and the core piece -36. In this switch a stud 35 moves,

fitted to a downward arm -34- of hoop 27. If new the guide piece 30 is moved downward, that is the lug cutting wire 2G drawn out of the clay, the stud 35 will first move in the vertical part of the slot formed by the rails l0 until it strikes against tongue -37. The latter swivels on a pin -38 and is under action of a spring -39 which continuously forces it upward. Said tongue 37- is turned by pin -35 when the wire -26- moves downward and will tend to turn the hoop 27- with the arm -23 around the spindle 29, that is the pin 35 will be forced around the point of the core piece -36 whereby pin 35 is prevented from returning into the same branch of the switch. During its upward motion caused by the springs 32-- the wire -26 will enter into the continuously advancing stream of clay and is carried along by the same, whereby the hoop 27- returns into its original vertical position. In order to also dress the front edge of the tile in the desired manner, say in a circular line, the driving spindle -6- is coupled with a vertical spindle 13- by means of a ball and socket joint 12 by means of which the spindle -13- is likewise rotated. On said spindle 13 are arranged above and below the stream of clay segments -14c which engage with gear wheel -15- the spindles -16- of which lie in the central line of the stream of clay. On spindles 16-- are fitted levers 17 over which the wire -18 is drawn for cutting the front edge of the tile, which considered from the direction of travel lies behind.

The wire -18- is hereby used when tile with segment shaped outline are to be cut and is detachably held by screws or the like, so that it can be conveniently removed. For cutting semicircular tiles the wire 18 is employed which can be adjusted according to the present invention. For this purpose it is held at its ends by a clamping arrangement 2 which can by means of levers -1'7 be approached along a radial slot -1- to the center as may be required so that circular curves of various diameters end of the tile is cut in known manner as may be required with a circular point or the like. At the same time the lug cutting wire is drawn out of the clay and immediately returned into initial working position by means of the switch -364EO- that is brought into contact with the clay where the lug ceases so that the work may be continuously continued without any loss of time or waste of material.

Having now described my invention what 1 I claim and desire to secure by Letters Patent of the United States is:

1. A machine for cutting roofing tiles comprising a carriage, a shaft horizontally mounted on said carriage, a handle for oscillating said shaft mounted thereon, a straight cutter keyed to said shaft so as to be oscillated in a plane vertical to said shaft, a spring-actuated stub-cutter vertically guided on said carriage and normally held in raised or cutting position, means connected to said shaft and adapted to move down said stub-cutter, a cutting'\vire vertically arranged and adapted to cut the front edge of the tile, means for connecting said cutting-wire to said shaft, and a suitable track mounted on a table and adapted for supporting said carriage so as to permit the carriage to be driven by means of the stream of clay passing out the press, substantially as set forth.

2. A. machine for cutting roofing tiles, comprising a carriage, a shaft mounted lengthwise above the middle of said carriage, a handle attached to the inner end of said shaft and adapted for oscillating said shaft, stops fitted to said carriage and adapted to form abutments of said handle, a straight cutter keyed with one end of its hoop to said shaft, a swiveling pawl pivotally attached to the end of a lever being pivoted to said carriage, a toothed segment keyed to said shaft and engaging a geared crank disk for moving said pawl in a vertical plane, a stub-cutter pivoted to a springactuated piece vertically guided in said carriage and normally held in raised or cutting position, a stop attached to saidstub-cutter and adapted to be engaged by said pawl if being lowered, a V shaped switch attached to said carriage and adapted for guiding a stud of said stub-cutter, a front cutter the stream of clay to advance uniformly, 10 adapted for suitably shaping the curved substantially as set forth.

front edge of the tile, said front cutter hav- In testimony whereof I have hereunto set ing a cutting-Wire vertically put into the my hand in the presence of two Witnesses. ends of levers keyed to short axles belng KARL GNAD.

journaled in the carriage and driven from said shaft, and a suitable track mounted on Witnesses:

a table and adapted for supporting said ERNST ENTENMANN, carriage so as to permit the carriage and ANNA HUBER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

